不同砧木对柑橘幼树生长和叶片糖含量的影响

Effects of Different Kinds of Rootstocks on the Growth of Citrus Young Tree and the Carbohydrates Contents in Leaves

摘要:

以体细胞杂种红橘+枳和红橘+粗柠檬、有性杂种Troyer枳橙和Swingle枳柚、枳(对照)作砧木的‘国庆4号’温州蜜柑2 a生嫁接苗为试材,通过盆栽试验研究了砧木对柑橘幼树生长和叶片糖含量的影响。结果表明,4种处理的生长势比对照旺盛;红橘+枳处理的花量极显著多于对照,其余3种砧木处理的则极显著少于对照。在光合色素含量上,Troyer枳橙处理最高,对照最低。不同砧木处理对叶片可溶性糖含量的年变化动态特征影响明显;不同砧木处理的叶片淀粉含量年变化动态特征相似。在不同时期,不同砧木处理对叶片可溶性糖和淀粉含量有明显的影响。初步评价了体细胞杂种红橘+枳和红橘+粗柠檬用作柑橘砧木的利用价值。

Abstract:

The two-year-old scion from Satsuma mandarine (Citrus unshiu Marc. cv. Guoqing No.4) was grafted onto 5 kinds of rootstocks: Poncirus trifoliata (I) for control, two somatic hybrids of C. reticulata with P. trifoliata (II) and with C. jambhiri (III), and two sexual hybrids C. sinensis × P. trifoliata (IV), C. maxima × P. trifoliata (V). The experiments showed that the trees growing from all the four kinds of rootstocks were vigorous compared to the control. Treatment II had more flowers than the control，but the treatment III，IV and V less．Highest content of photosynthetic pigments was observed in treatm ent IV and lowest in the control． Diferent treatm ents obviously influenced the tendency of the annual changes in the contents of soluble sugar and starch in leaves．The contents of soluble sugar and starch in leaves in different treatments changed obviously in various periods． The use value of somatic hybrids as a rootstock is discussed．